> Yes, I tried absorption rgb <1, 0.5, 0> (according to my scattering 
rgb<0, 0.5, 1> and reduced this filter, not translucency to 0... but 
Earth's surface still
> remains dull and low in contrast! Also in Darcy's tutorial, I didn't 
find anything about avoiding this effect... I browsed through the 
"finish" section of the
> PoV-Ray manual, but it was also no help to me... is it avoidable at 
all or is it an essential deficiency of raytracing?
> 

I'm beginning to wonder whether this effect is what is supposed to 
happen to the light as it travels through the simulated atmosphere.  For 
a similar scene I'm working on, I'm afraid I cheated and used several 
light sources, one the source of the rising sun, another shadowless 
light to rim light the atmosphere and a bit of artistic license to add a 
second sun into the scene from behind the viewer (well I'm not doing 
earth!!) But I guess there's no harm in making use of shadowless lights 
in this way.

Maybe some control over the contrast could be gained by using a 
color_map on your spherical density, this should simulate a thinning of 
the atmosphere from the planet's surface to the atmosphere's edge (index 
1.0 on the color_map).

One thing my own image is lacking is a descent glow over the planet's 
limb, any ideas?

Steve
website being built:
http://website.lineone.net/~sacrofts/home.htm

Post a reply to this message